Apparatus for manufacturing wheel-tires.



No. 122,561. PATNTBD JUNE 5, 1906.

P. n. THROPP. APPARATUS 11011 v111.111111111017111111111 WHEEL TIRES.

1112110111011 FILED 1101.1, 1905.

. 00 [lill u u lI Agive the completed tire.

"umn sfra'rns P MENT FFICE.

PETER I). THROPP, OFIRENTON, vNEW JERSEY.

APPARATUS FUR MANUFAGTUHING WHEEL-TERRES.

'pecicaton of Letters Patent.

Patented June 5, 1906.

Application tiled November 1. 1905. Serial No. 285,366.

New Jersey, have invented a new and useful Improvement in A paratus for Manufacturing Wheel-Tires, o which the following is a specification.

yMy invention relates to apparatus for manufacturing wheel-tires, and more articularly to apparatus for holding a clenc er-'tire in position during the vulcanizingprocess.

A practical embodiment of my invention is represented in the accompanying drawings, in vvhich-` Figure 1 is a view of the a aratus in side elevation, partly insection. ig. 2 is a transverse section in the plane of the line A A of Fig. 1. Fig. 3 is an enlarged transverse section showing the tire in position, and Fi 4 is a similar view showing a tire of di erent shape in cross-section.

Referring to Figs. 1, 2, and 3, 1 represents an annular hollow core or mandrel having the shape in cross-section'which'it is desired to In the present instance the outer part of the exterior of the core is flattened, as shown at 2, and the inner portion is gradually tapered to 'form the clencher ed es of the tire in substantially the position w ich they will normally occupy when in use. The extreme inner portion of the core is projected in the form of a rib or flange 3 to serve to limit the inward movement of the pressure-rings'and hold them the proper distance apart to form the clencher edges of the tire properly.

The pressure-rings are denoted by 4 and 5. They are intended to occupy positions on opposite sides .of the inner portion of the core and are provided at intervals with bolt-holes 6 and 7, which register with each other and receive bolts 8 for the purpose of drawing the two rings toward each other. The laces of the pressure-rings toward the core 1 are shaped to impart to the edges of the tire the usual clencher-hooks, and when drawn into position by the bolts S their bearing-shout,

ders 9 and 10 will contact with the opposite sides of the rib 3. The outer edges of the pressure-rings are made quite thick, as shown at 11 and 12, in order to make them hrm, and their inner flanges 13 14 are separated at intervals, producing narrow slots K15, which communicate with holes 16 in the rib of the core, thereby opening communication between the interior of the core and outer or surrounding medium.

` In operation, the several elements of the tire havin been placed in position on the core and t e ressure-rings forced into posi.- tion by the olts 8, filling-rings 17 18 of wedge shape in cross-section are placed a ainst the sides of the tire above the thick e ges 11 and 12 of the pressure-mugs, and the kWhole is wound with a Wrapping of tape 19, the llingleces 17 18 serving to impart the pressure o the Winding-tape to the sides of the tire to hold the latter m position during the vulcanizing process.

After vulcamzing the tape may be resis moved and the pressui'erings, as Well as the latter then slipped from the core or mandrel.

The apparatus is simple, effective, and may be manipulated withgreat rapidity. p

The core 20, Fig. 4, is suited for a tire of circular form as distinguished from the flat tened form, In other respects the apparatus shown in Fig. 4 is quite similar to that shown in the other ngures.`

What I claim as my invention is- 1. Tire-forming apparatus comprising an annular core or' mandrel, annular pressurerings arranged to engage the clencher edges ol the tire lea ing the outer body portion of the tire exposed and means for forcing the p1cssu1eiings into a predetermined position with respectto the core or mandrel.

2. Tire-forming apparatus comprising an annular core or mandrel provided with an inwardly-extending rib, pressure-rings arfilling-rings, separated from the tire, and the ranged 'to engage the clencher edges of the tire on opposite sides of the said rib leavin the outer body portion of the tire expose and means for forcing the pressure-rings against the opposite sides of the rib.

3. '.l`ire-forming apparatus comprising a/n annular core or mandrel, pressure-rings arranged to engage the clencher edges of the tire leaving the body of the tire exposed, the said pressure-rings being provided with blunt outer edges, lil g-rings wedge shape in rco,

cross-section for engaging the tire in proximity to the said blunt edges and means for forcing the pressure-rings toward each other.

4. Tire-forming apparatus comprising an annular hollow core prov1ded with an 1nvedges spaced apart at intervals, and means W'tnesses:

Q, smoel wisely-extending rib having perforations Iny testimony that I claim the foregoing as rfizfexethrough,l annular pressure rings army invention'l have signed my name, in preslq ralged to engags the cencher edges of they ence of two witnesses, this 1st day of Septemme leavin the outer body Portion of tho tire l ber, 1905. f Y A A oxposed, t e said Iings havmg their adjacentA PETER D. THROPP.

for freng pressage-rings toward each CLIFFORD W. LEE; y

sth@ H. P. MEssLER. 

